News

2020

05-22

Reasons for timely replacement of drilling oil_oil drilling rig

In the repair of the drilling machine, it needs to be disassembled. At the time of disassembly, according to the clarification between them, the demolition demand is also required. Then, through such disassembly, certain repairs can be made so that you can find the problem and then perform related maintenance.

2020

05-21

Maintenance of Drilling Rig Pneumatic Control System_Oil Drilling Rig Manufacturer

(3) When it is found that the air control valve parts work failure, do not disassemble the valve parts without analysis, because there are many reasons for the failure of the air control valve parts, sometimes it is not the valve parts themselves, but because the gas pipeline is blocked or the air pressure is too small (the origin pressure is low, the pipeline leaks seriously) and other reasons. Therefore, must be segmented inspection, method: first from the control valve, control pipeline, to the remote control valve, segmented open air connector, check the ventilation. If the control gas circuit is unblocked, check whether the working gas circuit is unblocked. The method is: disconnect the air outlet pipeline of the valve first, and check the ventilation condition. If it is not unblocked, check whether the origin of the air inlet line of the valve is blocked. If it is unblocked, it is proved that there is a problem with the valve, and then the valve can be opened for inspection. If there are spare valves, replace them first and find out the defects of the replaced valves. In short, if there is a problem with the gas circuit, we must patiently and carefully find out the cause and deal with it correctly. Blind demolition and repair are strictly prohibited. The pneumatic valve body has another feature: it has been working well during continuous use, but it suddenly failed after a few days of use. This situation is more likely to occur on dual-use relays. This is because the valve cavity will produce rust during the deactivation period, which will increase the assistance of the valve movement department, and cause air leakage due to work failure. Only the spool repeated activities several times can work properly. If the leakage continues, the valve must be opened instead to check the reason. When the drilling rig after a well or after a certain period of time (the longest should not exceed 3 months), the entire gas control system should be a maintenance, a comprehensive inspection of the wearing parts, so that timely replacement after cleaning, to avoid the valve in an abnormal state of work.

2020

05-20

Commonly used drilling methods for drilling rigs

Balanced pressure drilling: During the drilling process, a drilling method that maintains the borehole pressure equal to the formation pressure is called balanced pressure drilling.

2020

05-19

Selection method of down-the-hole drilling rig_oil drilling rig manufacturer

The selection of the down-the-hole drilling rig mainly considers several factors: the aperture, depth, direction, angle and drilling accuracy of the engineering hole, the rock condition, the condition of the construction site, the construction period, etc. Then according to these requirements to match the appropriate drilling rig, and supporting its corresponding air compressor. At present, large, medium and small, high, medium and low wind pressure, crawler walking and rubber wheel walking are widely used in the domestic market. The driving power includes diesel engines, electric motors, wind motors and other models. Taking the small and medium-sized crawler walking high wind pressure down-the-hole drilling machine as an example, the analysis is as follows:

2020

05-18

Treatment method of drilling rig sticking accident_oil drilling rig manufacturer

After the occurrence of sticking accident, firstly, it is necessary to analyze according to the circulation conditions of lifting, lowering, rotating and pump starting, as well as the known borehole conditions and various phenomena before sticking, so as to accurately judge the cause of sticking and then take corresponding measures. However, no matter what kind of sticking, we must try to adjust the performance of drilling fluid, remove rock cuttings in time, and clean the borehole. Generally, the following methods are commonly used to solve the sticking.

2020

05-18

Common causes of sticking in drilling rigs_oil drilling rig manufacturers

During the drilling process, the phenomenon that the drilling tool is stuck in the well and cannot move freely due to various reasons is called sticking. It mainly includes keyway sticking, sand sinking sticking, well collapse sticking, differential pressure sticking, reduced diameter sticking, falling object sticking, sand bridge sticking, mud bag sticking and drilling tool falling off. Formation structure, poor drilling fluid performance, improper operation, etc. may cause sticking, which must be analyzed according to the specific situation in order to effectively solve the sticking.

2020

05-16

Precautions for safe operation of truck-mounted drilling rig

The 150-meter drilling rig is suitable for water wells, engineering geological exploration and other drilling holes and various concrete structure inspection holes. According to the geological structure, the 150-meter drilling rig can be drilled with drill bits such as diamond, alloy and steel.

2020

05-14

Precautions in the process of using oil drilling rig

Some failures will occur when the down-the-hole petroleum mechanical drilling rig is used. Some failures are caused by the quality of the down-the-hole drilling rig itself, and some are caused by improper operation of the down-the-hole drilling rig. Downhole drilling rig failure, maintenance is more troublesome, will delay the construction period. This requires the user of the down-the-hole drill must have a certain understanding of the working principle of the down-the-hole drill. Before the drilling rig of down-the-hole petroleum machinery enters the site, the site must be leveled and the skid and tools must be prepared. After the rig enters the site, the rig must be raised with a skid to keep the tires off the ground and adjust the frame to a horizontal position: after the power is turned on, the motor can be started to raise the mast. After the mast is lifted, the screw at the bottom of the mast is unscrewed and supported on the support. Then install the pull rod, frame leg and guy rope, and adjust the tension degree of the pull rod and guy rope with the screw adjuster. The steel rope of the drilling tool drum of the down-the-hole drilling rig is led out from the drum through the guide pulley and tension pulley of the impact beam and then enters the drilling tool pulley at the top of the mast to hang down, and its end is connected with the drilling tool by the steel rope joint. The steel rope of the mud drum goes through the mud sheave at the top of the mast and hangs down to connect the end with the mud shaft barrel. The down-the-hole drill auxiliary drum is used in conjunction with three crown block at the bottom of the mast.

2020

05-14

What are the four ways to classify oil rigs?

With the continuous development of drilling production, the use conditions of drilling rigs are becoming more and more diversified, and various types of drilling rigs have appeared accordingly. Factors affecting the type and composition of the drilling rig are drilling method, drilling depth, hole size and drilling tool size. Conditions in the drilling area (e. g. power or fuel, transportation, meteorological conditions), etc.

2020

05-13

Working principle of drilling machine

In the process of sinking, the construction unit shall do a good job of describing each link of the whole drilling process, I .e. detailed construction records, geological histogram, particle analysis results of aquifer sand samples and filter materials, well pipe and filter pipe arrangement structure, well pipe connection mode and other data (including video or photo data), as well as the results of pumping test records.